Improvement in attaching caeriage thills



T. H. WOOD.

Thin-Coupling. No. 62,586. Patented Man 5. 1867 guitar giants gaunt @fficr.

THOMAS H. WOOD, OF MQNROEVILLE, OHIO.

Letters Patent No. 62,586, dated Zlfarch 5, 1867.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, THOMAS H. Wool), of Monroeville, in the county of Home, and State of Ohio, have invented certain new and useful Improvements in Carriage Shaft-Couplings; and I do hereby declare that the following is a full and complete description thereof, reference being bad to the accompanying drawings, making a part of this specification, in which- Figure 1 is a top view of the shaft-eouplingI Figure 2 is a side view.

Figure 3 is a longitudinal section in the direction of the lines x 9;.

Figures 4 and 5 are detached viewsiof the key.

Like letters refer to like parts in the ilifi'erent views presented.

A represents the links which connect the shafts or thills to the axle; B the plate which may be attached tothe axle by the clip in the ordinary manner. 0 is the key, for the purpose hereafter shown. I) D are springs which keep the key in its place and are attached at the lower end to the lower part of the arms. E E arejournais or wrists. F F are hooks, into which the journals and key fit.

This shaft-coupling is'designed to take the place of the ordinary bolt and nut, which are name to be lost by the nut getting loose and the bolt falling out, thus letting the shaft fall.

The journals or wrists F and link A are connected together, the links fitting between the arms F in the hooks of which the journals are placed. The key C is then inserted by pressing back the springs Dand pushing it down to the journals, around which it fits, the end being coved out for that purpose. These springs, when back in their places, hold it securely, there being a nib, i, overlapping the top of the key, thus not admitting of its removal until they are pressed back. This key cannot be displaced by any movement of the shaft or thills, as the line of strain is in the direction of the line a a, fig. 2. There can be no strain upon the key either by backing or pulling; therefore it cannot be displaced by any movement of the'thills when in use.

It is very simple, being quickly and easily done, not working loose by wear, and not liable to accidents from the shafts getting loose from the carriage, as in the ordinary way of bolting them to the axle; also the shafts can be much more readily connected anddetached than in the ordinary manner.

What I claim as my improvement, and desire to secure by Letters Patent, is-

The key C, springs D, in combination with the arms F, wrists E, and link A, constructed and arranged sub-- stantially as and for the purpose set forth.

THOMAS H. WOOD. Witnesses W. H. BURRIDGE, E. E. WAITE. 

